| Doppler echocardiographic flow characteristics of isolated patent ductus arteriosus: better delineation by Doppler color flow mapping. | |
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MedLine Citation:
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PMID: 3170973 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Eighteen infants and children with isolated ductus arteriosus and various hemodynamic states were examined with the Doppler color flow mapping technique to study the flow patterns of the patent ductus and its adjacent structures. Direct visualization of the ductus was achieved in all patients. All ductal flow was shunting left to right from the descending aorta to the pulmonary artery even in the presence of significant elevation of pulmonary artery pressure. However, transient bidirectional shunting was observed in two patients on serial studies. Disturbed systolic and diastolic flows were demonstrated within the ductus in each case. The blood flows in the main pulmonary artery consisted of three distinguishable areas: 1) a characteristic high velocity turbulent retrograde ductal jet throughout the entire cardiac cycle, located in the anterolateral aspect of the main pulmonary artery; 2) nonspecific low velocity retrograde late systolic and early diastolic flow, located in the posteromedial aspect of the main pulmonary artery; and 3) low velocity forward systolic and diastolic flow, occupying the remaining area of the pulmonary artery. The blood flows in the descending aorta near the ductal orifice consisted of disturbed systolic and diastolic flows in a reversed direction. By providing detailed real time blood flow information with simultaneous imaging of the ductus, Doppler color flow mapping greatly facilitates the detection of a small ductal shunt. This technique also allows detection of a bidirectional or right to left ductal shunt. |
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Authors:
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P K Liao; W J Su; J S Hung |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of the American College of Cardiology Volume: 12 ISSN: 0735-1097 ISO Abbreviation: J. Am. Coll. Cardiol. Publication Date: 1988 Nov |
Date Detail:
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Created Date: 1988-11-23 Completed Date: 1988-11-23 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8301365 Medline TA: J Am Coll Cardiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1285-91 Citation Subset: AIM; IM |
Affiliation:
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Department of Pediatrics, Chang Gung Memorial Hospital, Taipei, Taiwan, Republic of China. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aorta
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physiopathology* Child Child, Preschool Ductus Arteriosus, Patent / physiopathology* Echocardiography, Doppler / standards* Evaluation Studies as Topic Humans Infant Infant, Newborn Pulmonary Artery / physiopathology* Regional Blood Flow |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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